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"CITY INFRASTRUCTURE"
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Design and Implementation of a Smart Traffic Signal Control System for Smart City Applications
Infrastructure supporting vehicular network (V2X) capability is the key factor to the success of smart city because it enables many smart transportation services. In order to reduce the traffic congestion and improve the public transport efficiency, many intelligent transportation systems (ITS) need to be developed. In this paper, a smart traffic signal control (STSC) system is designed and implemented, it supports several smart city transportation applications including emergency vehicle signal preemption (EVSP), public transport signal priority (TSP), adaptive traffic signal control (ATSC), eco-driving supporting, and message broadcasting. The roadside unit (RSU) controller is the core of the proposed STSC system, where the system architecture, middleware, control algorithms, and peripheral modules are detailed discussed in this paper. It is compatible with existed traffic signal controller so that it can be fast and cost−effectively deployed. A new traffic signal scheme is specially designed for the EVSP scenario, it can inform all the drivers near the intersection regarding which direction the emergency vehicle (EV) is approaching, smoothing the traffic flow, and enhancing the safety. EVSP scenario and the related control algorithms are implemented in this work; integration test and field test are performed to demonstrate the STSC system.
Journal Article
Infrastructural monument
Infrastructural monument presents the proceedings of the first of two conferences organized by MIT's new Center for Advanced Urbanism around the biennial theme of infrastructure. Held in the spring of 2013, the \"Infrastructural Monument\" conference gathered designers, developers, policy experts, and scholars to address the potential to leverage infrastructure design beyond the realm of transportation of goods and labor into the realm of culture, public space, architecture, and landscape form. In other words, can infrastructure transcend mere practicality and fulfill a role that is profoundly cultural? Can targeted infrastructure projects transform a city from a collection of fragments to one with a common and cohesive regional identity?
Book
Critical success factors for public–private partnerships in smart city infrastructure projects
Purpose
Scaling up smart city infrastructure projects will require a large financial investment. Using public–private partnerships is one of the most effective ways to address budget constraints. Numerous factors have varying degrees of influence on the performance of Public private partnerships (PPP) projects; certain PPP factors are more crucial to the success of a smart city infrastructure project than others, and their influence can be greatly increased when they are fulfilled collectively. This study aims to find out what factors are unique to smart city PPP initiatives, as well as how these factors work together, so that successful smart city infrastructure PPP projects can be scaled up.
Design/methodology/approach
The methodology included three sequential stages: identifying the critical success factors (CSF) of PPP for smart cities based on an extensive literature review, collecting data from a sample of 90 PPP practitioners using a Likert scale questionnaire and estimating interrelationships among the CSF and their emergent clusters using structural equation modelling.
Findings
The best fit model developed in this study demonstrated the significance of each factor and their interrelationships within their categories in enhancing the performance of PPPs in smart city infrastructure projects. Five categories of critical success factors for PPPs in smart city infrastructure projects have been established: partnership and collaboration; financial sustainability; contractual duties and outsourcing; smart integration; and contract governance.
Practical implications
The proposed model represented the causal interrelationships among relevant critical success factors derived from literature, which may help in directing the organization’s attention and resources to more critical areas, leading to the effective fulfilment of the smart city infrastructure project’s objectives. In addition to the theoretical and methodological contributions, this study produced a usable and readily adaptable list and clusters of critical success factors for research in the area of the implementation of PPP in smart city infrastructure projects.
Originality/value
To the best of the authors’ knowledge, this is the first study to identify PPP critical success factors and their themed clusters for smart city infrastructure projects.
Journal Article
Green infrastructure planning : reintegrating landscape in urban planning
This useful guide provides an essential introduction to green infrastructure for planners, landscape architects, engineers and environmentalists.
Book
Inside and over urban buildings: will urban agriculture spark the next urban design revolution?
As the population continues to grow and the demand for food increases, the expansion of farming poses a threat to the existing forests and wildlands essential for retaining biodiversity worldwide and combating climate change. Therefore, it is essential to implement innovative strategies that optimize food production while effectively utilizing limited land resources. Despite challenges such as the frequent unavailability of vacant lots, and or buildings that can host farming activities, and inadequate supportive policies, urban farming offers numerous advantages. These benefits include enhancing food security, promoting public health, and reducing pollution associated with food transportation. Additionally, urban agriculture can mitigate the urban heat island effect, improve water retention, and foster biodiversity. However, current research on the impact of urban agriculture on city design remains alarmingly insufficient. After examining historical and contemporary urban projects that integrate agriculture into urban layouts through diagrams, author descriptions, and critical analyses, this paper argues for creating a connected network of farms within and on top of the existing urban buildings. This approach addresses not just the food requirements of the urban population but also uniquely contributes to preserving our built heritage. The case for urban agriculture is not just compelling; it is essential for our cities' future and our planet's health.
Journal Article
A policy and institutional analysis of urban transport system: the case of Pakistan's Lahore in the context of COVID-19
The bicycle is recognized as a sustainable mode of transport, yet in the developing world, its use is hindered by several factors. The COVID-19 pandemic, with its emphasis on isolation, created a changed travel pattern and thus an experimental environment for bicycling. This study examines Lahore, Pakistan, to evaluate bicycle promotion during and beyond the pandemic. It assesses policy frameworks, institutional implementation capacity, and the perception of cycling infrastructure and regulations based on the user feedback. Lahore, a major Pakistani city with significant development and capacity, has faced severe smog and poor air quality, highlighting the need for environmentally friendly transport. The study reveals an increase in bicycle use during COVID-19 restrictions, with over 96% of the respondents noting this rise. Many tried bicycling for the first time due to reduced traffic. However, post-restrictions opinions varied on whether the trend persisted. Better road infrastructure was found to corelate positively with the bicycling trend. Studies identified traffic lawlessness, high motorization, lack of infrastructure, smog, and harsh weather as major barriers. Despite the existence of civil society groups promoting bicycling, their efforts are hindered by lack of participation in policy and decision making. The study calls for addressing policy and institutional bottlenecks to promote bicycling in Lahore, with broader implications for Pakistan and other developing countries. Improved coordination among institutions and inclusion of user perspectives are crucial for creating a more bicycle friendly system.
Journal Article
Causes and effects of urban water scarcity on households in Daye town administration, Southern Ethiopia
This descriptive research was conducted in Daye town, Ethiopia, to assess the causes and effects of urban water scarcity on households. To this end, stratified sampling from probability, purposive and convenience from non-probability sampling techniques as well as primary and secondary sources of data were used. A questionnaire was distributed among selected 279 households and analyzed using SPSS-version-21. The major indicator of water scarcity used is the Falkenmark indicator. The study found that the sample households had an amount of water consumption per individual that was 10.52-liter per day. Water is considered to be accessible if an individual consumes 1700 m
3
per year, according to the Falkenmark indicator. However, the individual in the town receives 3.83 m
3
per year, which is an absolute scarcity. The causes of water scarcity were population growth and urbanization, lack of finance, and lack of institutional, technological, and managerial capacity. The effects were health and economic. There was waterborne disease due to a shortage of water and quality problems of available water sources found from unprotected nearby rivers. The economic cost included money spent on the purchase of water from vendors and the repair of old pipes. Likewise, the study revealed that service provision regarding water was poor and unequal. Thus, the study recommends that the drilling of additional boreholes, capacity building of water service offices, sustainable financing strategy, and participation of NGOs and private sectors in the water system are compulsory.
This paper is focused on the causes and effects of urban water scarcity on households in Daye town administration, southern Ethiopia. Water scarcity is a lack of secure access to water to satisfy basic demands (standards). Ethiopia is said to be a water tower of Africa but, a lack of potable water supply is common, and half of the population is affected by water scarcity. The water supply of the large cities in Ethiopia is supported by the World Bank and other donors, while most of the small towns are forgotten. The finance depends on the service charges being collected from the water beneficiaries of each town, which is very low in number to finance the needs of a growing population. Moreover, the capacity of the local water services offices remained low which needs skilled human resources, finance, and broad areas of policy intervention.
Journal Article